Tackle



March I 1, 1927.

P. w. SIEURIN TACKLE Filed Nov. 9, i925 Paw/ V Patented Mar. 1, 1927.

UNETED STATES PAUL W. SIEURIN, OF GGTTENBORG, SWEDEN.

TACKLE.

Application filed. November 9, 1925, Serial No. 67,788, and in SwedenDecember 5, 1924.

My invention relates to tackles especially as used on ship board ondavits or the like in order to simplify the operation and use of thetackles especially when hoisting the 6 blocks after having lowered thelife boats.

Frequently life boats on board ships are placed in sets of two or moreon top of each parts are in a state of rest, the tackles 2 other, inwhich case the same couple of davits is provided to handle several lifeboats. After having launched the first life boat the tackles have to behoisted up to be used for launching the next life boat. It

most frequently happens that the tackles thereby swing around and therope parts he come twisted, so that all hoisting is obstructed. It alsohappens that the lower pulley block or blocks turn over between the ropeparts twisting them together.

In order to obviate said troubles the presentinvention has been made. Itconsists therein that one of the rope runs of each tackle runs through adeflector block, the block rope being so arranged that it can be hauledsideways so that said rope run is deflected away from the others.

An important application of the invention can be made by carrying eachdeflector block controlling rope over a sheave, properly provided at theinward gunwale or the life boat, and further along the side of the boatforward and past the stern at that end of the boat which is lifted bythe tackle and then to the davit or to a place in its proximity. In suchcase there should of course exist some means for hauling in thedeflector block rope or shorten it, sothat not only one of the rope runscan be carried outward and thus lift the boat somewhat from itssupports, but also during a further hauling in of the deflector blockrope the life boat can be operated to swing outwardly.

My improved arrangement is illustrated on the accompanying drawing, inwhich Fig. 1 is a side elevational view of a life boat and supportingdavits showing my improved tackle arrangement and control;

Fig. 2 is a plan view of the same, and

Fig. 3 shows a modified arrangement.

In davits 1 a life boat 8 is suspended by means of tackles 2 and is alsostanding on supports 11. One of the runs 12 of each of the tackles 2runs through a deflector block 3, the controlling rope 4 of which in theshown embodiment runs over a block 5 fastened to the boat 8 by means ofany suitable de ice which devi is d t hable nd preferably so arrangedthat it is fastened only by means of taps or the like to the gunwale.The ropes 4: are further carried to tackles 7 and 7 respectively, andthen. by means of rop'es 9 to the respective davit 1, where such ropesare fixed.

Before the life boat is swung out all the being hauled tight and theirrunners made fast to some kevel or cleat device preferably provided inthe life boat. hen the life boat is to be launched the runners of thetackles 7 are hauled whereby the corresponding rope 4 is tightened andthe part 12 at the right hand tackle is carried outward by the deflectorblock 3 and stretched, thereby lifting this end of the boat somewhat.The runner 12 can not, however, be carried outward any great distancebefore the resistance will become so great that the strain in the ropei, the tackle 7 and the rope 9 forces the boat over board' with thestern past its davit.

Then the runner of the tackle 7 is hauled in and the, same operation isrepeated with the other end of the boat. The'boat can then be loweredsomewhat by means of the tackles 2 and be manned. During the furtherlowering the device 6 is released from the gun- Wale and thereby alsofrom the tackles 7 and 7.

If it appears, after launching the boat and releasing it from thetackles, that the tackles tend to twist, this can be obviated bycarrying the rope runners 12 still further outward by further haulingin'the tackles 7, 7. In order to prevent the lower tackle blocks fromturning around between the rope runners these blocks are preferably sodesigned that their point of gravity comes comparatively low. During thehoisting of the blocks the runners of the tackles are thus preventedfrom being twisted partly on account of the fact that the deflectorblocks keep one of the runners of the respective tackle away from the.others, and partly on account of the kevel devices preventing the lowerblocks from turning over.

The deflector blocks can be used independently of the swinging outtackles 7 and 7 This is shown in Fig. 3 where the tackle 13 connects theropes 4 extending from the deflector blocks 3 which engage each a runnerof the respective hoisting tackle 2. By means of the tackle 13 thedeflector blocks are caused to deflect the runners .12 to preventtwisting of the tackles 2 and at the same time to operate these tacklesto raise the boat, Such raising is in conjunction with swinging movementof the boat controlled by the tackles 7 and 7.

From this invention the advantage willbe derived that the ships deckwill be free from all encumbrance directly after the swinging out of theboats. Thus the boat supports 11 can be made detachable and fixed onlyby means of pins in the deck. Devices for launching the boats can betied to folding ring-bolts. In this way the deck can be freed in aninstant from all protruding objects so that noth ng obstructs thepassage and an easy embarkation. During the embarkation the valuableadvantage is obtained that the life boat is held very steady by thetackles 7, 7. Furthermore, an additional staying of the boat is obtainedby placing a rope or the like in a well known manner from one of the gunwales of the boat down below the middle of the boat on its outside andthence in to a fastening on the deck.

Having described my invention, I claim as follows 1. In combination, twoadjacent suspended tackles, a deflector block engaging one of the roperunners of each tackle, and means for hauling said deflector blockstoward each o her whereby to deflect the rope runners.

2. In combination, davits, a life-boat, tackles suspending said boatfrom said davits, the ends of the ropes of said tackles being secured, adeflector block engaging one the rope runners of each suspended tackle,

means for hauling said deflector blocks toward each other to causedeflection of the engaged runners and operation of the suspended tacklesto lift the boat.

3. In combination, davits on board ship, a life-boat, tackles forsuspending said boat from said davits, the ends of said tackle ropesbeing secured, a deflector block r ceiving one of the rope runners ofeach suspending tackle, means for hauling said deflector blocks towardeach other to cause deflection of said engaged rope runners andoperation of the suspended tackles to raise the boat, and means forswinging said boat when thus raised by said suspending tackles.

4:. In combination, a pair of davits on ship board, a life boat,suspension tackles for suspending said boat from said davits, a set ofpulley-blocks on the inside of said boat positioned at substantially themiddle thereof, a tackle extending from each davit around the adjacentend of the boat and along the inner side thereof, a deflector ropeextending from each of said tackles through one of said pulley-blocks, adeflector block at the free end of each deflector rope receiving one ofthe rope runners of the respective suspension tackles, operation ofeither one 1 sai d swing controlling tackles causing operation of therespective deflector blocks to deflect the rope runner engaged therebyand to cause the respective suspension tackle to raise the respectiveend of the boat. 7

5. In combination, a set of davits onship board, a life-boat, suspensiontackles suspending said boat from said davits, a deflec tor blockengaging one of the runners of each of said tackles, swingingtacklemechanism associated with each davit and the adjacent end of saidboat for swinging such end, and means whereby operation of either ofsaid controlling tackles will pull the respective deflector block tocause deflection of the engaged rope runner and operation of thesuspension tackle to raise such end of the boat.

6. In combination, a set of davits, a lifeboat, suspension tackles forsuspending said boat, a deflector rope engaging one of the runner ropesof each of said suspension tackles, and a tackle connecting the outerends of said deflector ropes for drawing sait ropes to cause deflectionof the engaged run ner ropes wnereby twisting of the suspension tackleswill be prevented.

In witness whereof, I hereunto subscribe my name this Hth day ofOctober, 1925.

PAUL W. SIEUEIN,

